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EP2646375B1 - Procédé d'extraction de gaz contenus dans des réservoirs de schiste et purification de l'eau produite qui en résulte - Google Patents

Procédé d'extraction de gaz contenus dans des réservoirs de schiste et purification de l'eau produite qui en résulte Download PDF

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Publication number
EP2646375B1
EP2646375B1 EP11845199.6A EP11845199A EP2646375B1 EP 2646375 B1 EP2646375 B1 EP 2646375B1 EP 11845199 A EP11845199 A EP 11845199A EP 2646375 B1 EP2646375 B1 EP 2646375B1
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EP
European Patent Office
Prior art keywords
produced water
unit
permeate stream
water
produced
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EP11845199.6A
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German (de)
English (en)
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EP2646375A4 (fr
EP2646375A1 (fr
Inventor
Robert Bradley
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Veolia Water Technologies Inc
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Veolia Water Technologies Inc
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Publication of EP2646375A4 publication Critical patent/EP2646375A4/fr
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/26Treatment of water, waste water, or sewage by extraction
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/285Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1236Particular type of activated sludge installations
    • C02F3/1268Membrane bioreactor systems
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1236Particular type of activated sludge installations
    • C02F3/1268Membrane bioreactor systems
    • C02F3/1273Submerged membrane bioreactors
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/083Mineral agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/1431Dissolved air flotation machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/24Pneumatic
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Definitions

  • one of the main concerns in designing RO systems is to provide a process design that eliminates or minimizes RO membrane fouling.
  • the present system and process is designed to eliminate, or at least minimize, membrane fouling of the RO units 30 and 36.
  • the organics are removed by the DAF, MPPE, and MBR units.
  • Scaling potential due to calcium carbonate is substantially reduced by the addition of the sulfuric acid and can be further controlled by an anti-scalant feed.
  • Iron and aluminum have also been removed upstream from the RO units 30 and 36. This leaves as the major concern, silica.
  • the solubility of silica is about 120 ppm in neutral water.
  • the produced water generally has as much as 70 ppm of silica.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Removal Of Specific Substances (AREA)

Claims (15)

  1. Procédé d'élimination de gaz d'une formation souterraine produisant un gaz et d'élimination des contaminants d'une eau produite résultante, comprenant :
    la fourniture d'un mélange de gaz et d'eau collecté à partir de la formation souterraine produisant un gaz ;
    la séparation du gaz à partir du mélange pour produire un produit gazeux et de l'eau produite qui contient des contaminants incluant des matières organiques, des solides en suspension et des solides dissous incluant de la silice ;
    l'élimination des solides en suspension à partir de l'eau produite ;
    après l'élimination d'au moins une partie des solides en suspension à partir de l'eau produite, l'envoi de l'eau produite vers une unité d'extraction sur polymère macroporeux (MPPE), ladite unité MPPE incluant une colonne ayant un réseau de billes qui comprennent un polymère qui renferme ou contient un fluide d'extraction ;
    le traitement de l'eau produite dans l'unité MPPE en éliminant les composés organiques aromatiques à partir de l'eau produite ;
    après le traitement de l'eau produite dans l'unité MPPE, l'envoi de l'eau produite vers un bioréacteur à membrane (MBR) ;
    le traitement de l'eau produite dans le MBR pour éliminer les matières organiques supplémentaires ;
    le mélange d'un agent inhibant la précipitation de la silice avec l'eau produite ;
    après le mélange de l'agent inhibant la précipitation de la silice avec l'eau produite, l'envoi de l'eau produite vers au moins une unité OI et la production d'un courant de rejet contenant des solides fortement dissous et d'un courant de perméat de solides peu dissous ; et
    l'élimination suffisante des contaminants à partir de l'eau produite de façon que le courant de perméat soit approprié pour :
    1. une utilisation dans un fluide de fracturation ;
    2. une utilisation dans une boue de forage ; ou
    3. un rejet dans l'environnement quand les solides dissous totaux sont réduits à moins de 1000 ppm et que essentiellement la totalité des matières organiques est éliminée.
  2. Procédé selon la revendication 1, incluant l'élimination de l'alcalinité substantielle des bicarbonates à partir de l'eau produite avant le traitement de l'eau produite dans l'unité MPPE.
  3. Procédé selon la revendication 1, dans lequel l'eau produite inclut en outre du baryum et du strontium, et dans lequel le procédé inclut après la séparation de l'eau produite du gaz, la diminution du pH de l'eau produite, l'ajout d'un sulfate à l'eau produite, et la précipitation du baryum et du strontium sous forme de sulfates.
  4. Procédé selon la revendication 1, dans lequel une unité de séparation est disposée en amont de l'unité MPPE et fonctionne pour éliminer l'huile libre et les solides en suspension à partir de l'eau produite, et dans lequel l'unité de séparation inclut une unité de flottation à air dissous, une unité de flottation à gaz induit, un clarificateur, ou un système de floculation lestée.
  5. Procédé selon la revendication 1, incluant le mélange d'au moins une partie du courant de perméat avec des constituants de fracturation pour former un fluide de fracturation, et le déchargement du fluide de fracturation sous pression dans une formation souterraine ne produisant pas de gaz.
  6. Procédé selon la revendication 1, incluant le mélange d'acide sulfurique avec l'eau produite et la précipitation des métaux dissous dans l'eau produite sous forme de sulfates.
  7. Procédé selon la revendication 1, dans lequel l'eau produite inclut du bore et dans lequel l'eau produite est traitée par des première et seconde unités OI et dans lequel le courant de perméat inclut un premier courant de perméat produit par la première unité OI et un second courant de perméat produit par la seconde unité OI ; et dans lequel le procédé inclut l'augmentation du pH du premier courant de perméat jusqu'à 10 ou plus et l'envoi du premier courant de perméat dans la seconde unité OI et dans lequel la seconde unité OI est efficace pour éliminer le bore de façon que le second courant de perméat inclut une concentration en bore de 0,5 ppm ou moins.
  8. Procédé selon la revendication 1, incluant le mélange d'au moins une partie du courant de perméat avec des constituants de boue de forage pour former une boue de forage, et le déchargement de la boue de forage dans une formation souterraine ne produisant pas de gaz.
  9. Procédé selon la revendication 1, dans lequel l'eau produite séparée du gaz présente un pH de 7,0 ou plus, et dans lequel le procédé inclut l'ajout d'un acide à l'eau produite et la diminution du pH jusqu'à approximativement 6,7 ou moins et la précipitation des composés contenant des métaux dans l'eau produite.
  10. Procédé selon la revendication 9, incluant le mélange d'un coagulant avec l'eau produite et le fait d'amener une partie des acides organiques à coaguler, et l'élimination des acides organiques coagulés à partir des eaux usées.
  11. Procédé selon la revendication 10, dans lequel l'acide est l'acide sulfurique et l'eau produite inclut du baryum et dans lequel le procédé inclut la précipitation de sulfate de baryum dans l'eau produite.
  12. Procédé selon la revendication 1, dans lequel l'unité d'extraction sur polymère macroporeux inclut une pluralité de billes de polymère, chacune ayant un fluide d'extraction disposé à l'intérieur de celles-ci, le procédé comprenant en outre l'envoi de l'eau produite sur les billes de polymère de façon que les composés organiques aromatiques dans l'eau produite traversent les billes de polymère et soient dissouts dans le fluide d'extraction.
  13. Procédé selon la revendication 1, comprenant l'ajout d'un inhibiteur de précipitation de silice à l'eau produite avant l'envoi de l'eau produite vers l'unité d'osmose inverse de façon que la silice dans l'eau produite reste en solution lorsque l'eau produite traverse l'unité d'osmose inverse.
  14. Procédé selon la revendication 1, dans lequel l'eau produite inclut du fer, une dureté, du chlore, un sulfate, un bicarbonate, et dans lequel le courant de perméat inclut moins de 5 mg/l de fer, moins de 200 mg/l de dureté, moins de 2000 mg/l de chlore, moins de 500 mg/l de sulfate, moins de 600 mg/l de bicarbonate, et dans lequel le courant de perméat inclut une alcalinité totale de moins de 1000 mg/l.
  15. Procédé selon la revendication 7, comprenant en outre :
    l'élimination du carbonate de calcium à partir de l'eau produite dans la première unité d'osmose inverse de façon que le premier courant de perméat contienne sensiblement moins de carbonate de calcium qu'un premier courant de rétentat produit par la première unité d'osmose inverse ;
    l'augmentation du pH du premier courant de perméat avant l'envoi du premier courant de perméat à travers la seconde unité d'osmose inverse ; et
    l'élimination du bore à partir du premier courant de perméat dans les secondes unités d'osmose inverse.
EP11845199.6A 2010-12-01 2011-12-01 Procédé d'extraction de gaz contenus dans des réservoirs de schiste et purification de l'eau produite qui en résulte Active EP2646375B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/957,752 US8734650B2 (en) 2010-12-01 2010-12-01 Method for recovering gas from shale reservoirs and purifying resulting produced water to allow the produced water to be used as drilling or frac water, or discharged to the environment
PCT/US2011/062802 WO2012075233A1 (fr) 2010-12-01 2011-12-01 Procédé d'extraction de gaz contenus dans des réservoirs de schiste et purification de l'eau produite qui en résulte

Publications (3)

Publication Number Publication Date
EP2646375A1 EP2646375A1 (fr) 2013-10-09
EP2646375A4 EP2646375A4 (fr) 2015-11-18
EP2646375B1 true EP2646375B1 (fr) 2020-02-26

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EP11845199.6A Active EP2646375B1 (fr) 2010-12-01 2011-12-01 Procédé d'extraction de gaz contenus dans des réservoirs de schiste et purification de l'eau produite qui en résulte

Country Status (5)

Country Link
US (1) US8734650B2 (fr)
EP (1) EP2646375B1 (fr)
CN (1) CN103313943A (fr)
AU (1) AU2011336553B2 (fr)
WO (1) WO2012075233A1 (fr)

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Also Published As

Publication number Publication date
US20120137883A1 (en) 2012-06-07
AU2011336553B2 (en) 2015-11-05
CN103313943A (zh) 2013-09-18
EP2646375A4 (fr) 2015-11-18
AU2011336553A1 (en) 2013-05-02
WO2012075233A1 (fr) 2012-06-07
US8734650B2 (en) 2014-05-27
EP2646375A1 (fr) 2013-10-09

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